Damarchus is a genus of Asian mygalomorph spiders in the family Bemmeridae, first described by Tamerlan Thorell in 1891.
Damarchus workmani is most often sighted outdoors, and during the month of March.
Species it contained 10 species: Damarchus assamensis Hirst, 1909 — India Damarchus bifidus Gravely, 1935 – India Damarchus cavernicola Abraham, 1924 — Malaysia Damarchus dao Schwendinger & Hongpadharakiree, 2023 — Thailand Damarchus inazuma Kunsete & Warrit, 2025 — Thailand Damarchus lanna Schwendinger & Hongpadharakiree, 2023 — Thailand Damarchus montanus (Thorell, 1890) — Indonesia (Sumatra) Damarchus oatesi Thorell, 1895 — Myanmar Damarchus pylorus Schwendinger & Hongpadharakiree, 2023 — Thailand Damarchus workmani Thorell, 1891 — Singapore Damarchus inazuma was added to the genus in 2025. The species name comes from the character Inazuma from the manga One Piece.
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